Measurement of burnable poison
absorptions and critical
assemblies

ABSTRACT

A METHOD AND APPARATUS IS DESCRIBED FOR MEASURING THE NEUTRON ABSORPTION CHARACTERISTICS OF BURNABLE POISON ELEMENTS WITHIN A NUCLEAR REACTOR. A CONTAINER OF THE SAME SIZE AND SHAPE OF THE BURNABLE POISON ELEMENT IS LOCATED WITHIN THE CORE AND CONNECTED TO INLET AND OUTLET LINES, MIXING TANK MEANS, A PUMP, AND A COUNTING SYSTEM SUCH THAT VARIOUS SOLUTIONS HAVING CONCENTRATIONS OF THE BURNABLE POISON MAY BE CIRCULATED THROUGH THE REACTOR TO DETERMINE VARIOUS BURNABLE POSION ABSORPTION CHARACTERISTICS WITHOUT SHUTTING DOWN THE REACTOR.

Published at the request of the applicant or owner in accordance with the Notice of Dec. 123, 196i), 869 0.G. 687. The abstracts 01: Defensive Publication applications are identified by distinctly numbered seriesand are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and. reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent and Trademark Office makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED NOVEMBER 4, 1975 T940,009 MEASUREMENT OF BURNABLE POISON ABSORP- TiON S AND CRITICAL ASSEMBLIES Alvin Radowsky, Tel Aviv, Israel, assignor to the United States of America as represented by the United States Atomic Energy Commission Filed May 23, 1974, Ser. No. 472,926 Int. Cl. G21c 17/00 US. Cl. 176-19 R 1 Sheet Drawing. 8 Pages Specification A method and apparatus is described for measuring the neutron absorption characteristics of burnable poison elements within a nuclear reactor. A container of the same size and shape of the burnable poison element is located within the core and connected to inlet and outlet lines, mixing tank means, a pump, and a counting system such that various solutions having concentrations of the burnable poison may be circulated through the reactor to determine various burnable poison absorption characteristics without shutting down the reactor.

Nov. 4, 1975 A. RADKOWSKY MEASUREMENT OF BURNABLE POISON ABSORPTIONS AND CRITICAL ASSEMBLIES Original Filed May 23, 1974 

